13 Jun
2012
13 Jun
'12
9:27 p.m.
On 6/13/12 6:57 AM, Simon Hengel wrote:
I'll go ahead and make this change. Thanks for the suggestion!
I agree that ArithException feels more appropriate here. But I make two observations:
(1) It replaces specific error messages with less specific ones.
The error message will not include the function/operator name anymore, e.g.:
ghci> 1 % 0 *** Exception: Ratio.%: zero denominator
would become:
ghci> 1 % 0 *** Exception: divide by zero
That's no good. I wonder whether ArithExceptions should be given their code location a la assertion failures[1]. Probably all the built-in exception types should do so. [1] http://www.haskell.org/ghc/docs/7.4.1/html/users_guide/assertions.html -- Live well, ~wren